jdk8-mips64-public/hotspot: src/cpu/sparc/vm/icache

6985015: C1 needs to support compressed oops
Summary: This change implements compressed oops for C1 for x64 and sparc. The changes are mostly on the codegen level, with a few exceptions when we do access things outside of the heap that are uncompressed from the IR. Compressed oops are now also enabled with tiered.
Reviewed-by: twisti, kvn, never, phh

     1 /*

     2  * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    25 #include "precompiled.hpp"

    26 #include "assembler_sparc.inline.hpp"

    27 #include "runtime/icache.hpp"

    29 #define __ _masm->

    31 void ICacheStubGenerator::generate_icache_flush(

    32   ICache::flush_icache_stub_t* flush_icache_stub

    33 ) {

    34   StubCodeMark mark(this, "ICache", "flush_icache_stub");

    35   address start = __ pc();

    37   Label L;

    38   __ bind(L);

    39   __ flush( O0, G0 );

    40   __ deccc( O1 );

    41   __ br(Assembler::positive, false, Assembler::pn, L);

    42   __ delayed()->inc( O0, 8 );

    43   __ retl(false);

    44   __ delayed()->mov( O2, O0 ); // handshake with caller to make sure it happened!

    46   // Must be set here so StubCodeMark destructor can call the flush stub.

    47   *flush_icache_stub = (ICache::flush_icache_stub_t)start;

    48 };

    50 #undef __

src/cpu/sparc/vm/icache_sparc.cpp@ac637b7220d1

src/cpu/sparc/vm/icache_sparc.cpp

Mercurial > jdk8-mips64-public > hotspot / file revision

src/cpu/sparc/vm/icache_sparc.cpp@ac637b7220d1

src/cpu/sparc/vm/icache_sparc.cpp